Originally Posted by ProDave:
“Some tv engineers will open up an LCD panel and replace the ccfl tubes (I have done a couple) But it is not a job for the faint hearted, and not without risks of breaking the panel or it's tab connections.
but if the panel is "dud" it sometimes can be worth risking it, if the alternative is to scrap the set.
I keep a box of assorted ccfl tubes recovered from broken screens that I have scrapped for this purpose.”
I took a small (22 inch) scrap Samsung panel to pieces the other week, because I had identified the fault as one of the CCFL's - purely as a matter of personal interest, and to see if it might 'just' be a poor connection or something (I have seen burnt connections inside LCD panels).
It took a
LOT of getting to pieces, and I was shocked to find that it was edge-lit (from top and bottom) with two incredibly thin tubes side by side - so instead of the normal multiple diffuser sheets, there was a solid piece of plastic about a quarter cm thick (making the tubes about 1/8cm thick).